package exception.part2;

public class StudentTest {

  public static void main(String[] args) {
    try {
      Student s = new Student();
      s.regist(-1001);
      System.out.println(s);
    } catch (Exception e) {
      //			e.printStackTrace();
      System.out.println(e.getMessage());
    }
  }
}

class Student {

  private int id;

  public void regist(int id) throws Exception {
    if (id > 0) {
      this.id = id;
    } else {
      //			System.out.println("您输入的数据非法！");
      // 手动抛出异常对象
      //			throw new RuntimeException("您输入的数据非法！");
      //			throw new Exception("您输入的数据非法！");
      throw new MyException("不能输入负数");
      // 错误的
      //			throw new String("不能输入负数");
    }
  }

  @Override
  public String toString() {
    return "Student [id=" + id + "]";
  }
}
